Car battery booster



FIG. 1 is a rear, left-side, top perspective view of a car battery booster;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a left-side elevational view thereof;

FIG. 5 is a right-side elevational view thereof;

FIG. 6 is a rear elevational view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines depict unclaimed portions of the car battery booster, and thus form no part of the claimed design. 

CLAIM The ornamental design for a car battery booster, as shown and described. 